CN116345652A

CN116345652A - Power supply device and power supply equipment

Info

Publication number: CN116345652A
Application number: CN202111589980.XA
Authority: CN
Inventors: 郑玉峰; 王铁; 郭志刚; 王连强
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2023-06-27

Abstract

The embodiment of the application provides a power supply device, and this power supply device is used for supplying power to load, and this power supply device includes: the device comprises a first circuit module, a second circuit module and a voltage control module. The first circuit module comprises a first power supply, and the output end of the first circuit module is connected with a load; the second circuit module comprises a second power supply, and the output end of the second circuit module is connected with a load; the first port of the voltage control module is connected with the first power supply, the second port of the voltage control module is connected with the second power supply, and the voltage control module is used for controlling the voltage difference between the output voltage of the first power supply and the output voltage of the second power supply to be smaller than or equal to a threshold value through the first port and the second port. Wherein the first circuit module and the second circuit module are connected in parallel. The device can realize that first power and second power supply to the load simultaneously, realizes the current sharing, and can realize online power detection.

Description

Power supply device and power supply equipment

Technical Field

The embodiment of the application relates to the field of circuits, and more particularly relates to a power supply device and power supply equipment.

Background

Box-type communication equipment such as routers and switches is smaller in size, and is usually powered by a single power supply, but as the capacity of the equipment is larger and larger, the importance of the equipment is more and more important, the requirement on the reliability of the equipment power supply is also higher and higher, and the requirement on high reliability cannot be met by the single power supply.

In order to realize dual-input dual-power supply in a limited space, part of box-type equipment adopts a scheme of mixing power supply by an internal power supply module and an external power supply adapter or an uninterruptible power supply (Uninterruptible Power Supply, UPS), but for the scheme of power supply, diodes or Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) are generally adopted to complete the combination of two paths of power supplies, so that when one path of power supply supplies power to a load, the other path of power supply cannot supply power to the load, and meanwhile, as two paths of power supply cannot be realized, the problem of incapability of detecting the carrying capacity of one path of power supply without power supply on line is caused, the silence fault of the equipment is caused, and the reliability is lowered.

Disclosure of Invention

The embodiment of the application provides a power supply device, which can realize that an internal power supply module and an external power supply adapter supply power to a load simultaneously, and can realize the on-line detection of the load capacity, namely the power of the external power supply under the condition that the power supply device supplies power to the load.

In a first aspect, there is provided a power supply apparatus comprising: the voltage control module controls the voltage difference between the output voltage of the first power supply and the output voltage of the second power supply to be smaller than or equal to a threshold value through the first port and the second port.

Wherein the first circuit module and the second circuit module are in a parallel relationship.

Wherein the threshold is an empirical value.

It will be appreciated that no power supply back-flow occurs between the first power supply and the second power supply when the voltage difference between the output voltage of the first power supply and the output voltage of the second power supply is less than or equal to the threshold value.

It will be appreciated that the supply reverse flow, i.e. the supply with the higher output voltage, supplies power to the supply with the lower output voltage.

According to the embodiment of the application, the voltage control module is used for controlling the voltage difference between the output voltage of the first power supply and the output voltage of the second power supply to be smaller than or equal to the threshold value, so that the first power supply and the second power supply power to the load at the same time.

With reference to the first aspect, in certain implementations of the first aspect, the voltage control module further includes: the device comprises a voltage detection module, a voltage comparison module and a voltage regulation module.

Specifically, the voltage detection module is used for detecting the output voltage of the first power supply and the output voltage of the second power supply.

Specifically, the voltage comparison module is configured to detect whether the voltage difference is less than or equal to a threshold value.

Specifically, when the voltage difference is greater than a threshold value, the voltage adjustment module is configured to adjust the output voltage of the first power supply and the output voltage of the second power supply such that the voltage difference is less than or equal to the threshold value.

Optionally, when the voltage difference is smaller than or equal to the threshold value, the voltage adjusting module adjusts the output voltage of the first power supply and the output voltage of the second power supply, so that normal operation of the load can be ensured.

With reference to the first aspect, in certain implementation manners of the first aspect, the first circuit module further includes a first MOS transistor, and the second circuit module further includes a second MOS transistor, where the first MOS transistor is located between the first power supply and the load, and the second MOS transistor is located between the second power supply and the load.

With reference to the first aspect, in some implementations of the first aspect, the power supply device further includes a combining control module, a first port of the combining control module is connected to the first MOS transistor, a second port of the combining control module is connected to the second MOS transistor, and the combining control module is configured to disconnect the first MOS transistor or the second MOS transistor when the voltage difference is greater than a threshold.

It should be understood that when the output voltage of the first circuit module is larger, the combining control module disconnects the second MOS transistor, and when the output voltage of the second circuit module is larger, the combining control module disconnects the first MOS transistor.

Alternatively to this, the method may comprise,

through the arrangement of the combination control module and the MOS tube, circuit damage caused when the voltage difference between the first circuit module and the second circuit module is larger than a threshold value is avoided, and the function of protecting the circuit is achieved.

With reference to the first aspect, in certain implementation manners of the first aspect, the power supply device further includes a power detection module, where the power detection module is configured to detect an output power of the first power supply and/or an output power of the second power supply when the voltage difference is less than or equal to a threshold value.

When the voltage difference is smaller than or equal to the threshold value, the first power supply and the second power supply power to the load, namely the first power supply and the second power supply are loaded, namely the loading capacity of the first power supply and the second power supply can be detected or the power of the first power supply and the power of the second power supply can be detected online.

It should be understood that the power supply device may be applied to a cartridge type apparatus.

In a second aspect, a power supply apparatus is provided, including a power supply device provided in any embodiment of the first aspect.

Drawings

Fig. 1 is a schematic diagram of a dual-power-supplied cassette communication device.

Fig. 2 is a schematic diagram of a dual power combining circuit using diodes.

Fig. 3 is a schematic diagram of a dual power combining process using MOS transistors.

Fig. 4 is a schematic structural diagram of a power supply device according to an embodiment of the present application.

Fig. 5 is a schematic view of a power connector buckle provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments provided in the present application, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments herein without making any inventive effort shall fall within the scope of the present application.

Alternatively, the power supply device provided in the embodiment of the present application may be applied to a cassette type communication apparatus.

The box-type communication equipment such as a router and a switch is smaller in size, but the capacity of the equipment is larger and larger, and the required reliability is higher and higher, so that double-power supply is required, and as shown in fig. 1, the box-type communication equipment adopts a double-power supply mode of an internal power supply module and an external power supply adapter or a UPS battery.

The dual-power supply mode is adopted, the output voltage stability of the two paths of power supplies cannot be guaranteed, particularly the output voltage stability of an external power supply adapter or a UPS battery cannot be guaranteed, voltage difference possibly exists between the external power supply adapter or the UPS battery and the voltage of an internal power supply module, when the voltage difference exceeds a threshold value, a power supply with large output voltage supplies power to a power supply with small output voltage, so that the voltage is reversed, corresponding measures are taken to complete the combination of the dual power supplies during the dual-power supply to avoid the reverse flow of the voltage, a power supply device is protected, and the reliability of power supply equipment is improved.

A schematic diagram of the dual power combining using diodes is shown in fig. 2.

It should be noted that fig. 2 shows a schematic diagram of completing dual-power supply combining by using a diode in the box-type communication device, and fig. 2 may also be a schematic diagram of completing dual-power supply combining by using a diode in other devices. As shown in fig. 2, when two diodes are connected to two power sources, respectively, due to the characteristics of the diodes, if the voltage difference between the voltages applied to the two diodes is greater than a threshold value, the diode having the small voltage at both ends is turned off, and the diode having the large voltage at both ends is turned on. Therefore, in the combining scheme shown in fig. 2, generally, when the voltage difference between two power supplies is greater than the threshold value, only one diode is turned on at the same time, i.e. only one power supply can be loaded at the same time. Even if voltage drop occurs in one power supply without load, the load capacity of the power supply without load is not detected because the power supply without load cannot be loaded in the combining scheme.

It should be noted that, the diode is used to complete the combination of the dual power supply, the circuit design is simpler, but when the diode is conducted, the voltage drop caused by the diode is larger, the power consumption is larger, and the diode cannot be used as the combination of high power.

Fig. 3 is a schematic diagram of a MOS transistor for dual power combining. It should be noted that, fig. 3 shows a schematic diagram of completing dual-power supply combining by using a MOS tube in the box-type communication device, and fig. 3 may also be a schematic diagram of completing dual-power supply combining by using a MOS tube in other devices.

As shown in fig. 3, the device uses a MOS transistor multi-channel control unit to complete the dual-power combining. When the voltage difference of the voltage applied to the two MOS tubes is larger than the threshold value, the MOS tubes cannot be disconnected, so that the damage to the MOS tubes is caused, and therefore the combination control unit is required to control and detect the voltage difference between two ends of the MOS tubes, and determine that one MOS tube is conducted, and the other MOS tube is cut off, so that the damage to the MOS tubes is prevented. Therefore, in the combining scheme shown in fig. 3, generally, when the voltage difference between two power supplies is greater than the threshold value, only one MOS transistor is turned on at the same time, i.e. only one power supply load can be realized at the same time. Even if voltage drop occurs in one power supply without load, the load capacity of the power supply without load is not detected because the power supply without load cannot be loaded in the combining scheme.

In one possible implementation, the combination control unit is implemented by two voltage comparators, and uses the comparison result of the voltages to determine how to drive the MOS transistors, i.e. which is on and which is off.

It should be noted that, the combination of the dual power supply is completed by using the MOS transistor and the combination control unit, and the circuit design is complex due to the need of the combination control unit, but the voltage drop caused by the MOS transistor is small, the power consumption is small, and the dual power supply is suitable for being used as a high-power combination.

As shown in fig. 2 and fig. 3, the voltage difference between the two power supplies cannot be controlled to be less than or equal to the threshold, so that only one power supply can be generally realized, and the carrying capacity of the power supply without power supply cannot be detected online.

Fig. 4 is a schematic structural diagram of a power supply device according to an embodiment of the present application. As shown in fig. 4, the power supply apparatus is for supplying power to a load 160, and the power supply apparatus 100 includes:

the first circuit module 110, the second circuit module 120, the voltage control module 130. The first circuit module 110 includes a first power supply 111, optionally the first circuit module 110 includes a first MOS transistor 112, the second circuit module 120 includes a second power supply 121, and optionally the second circuit module 120 includes a second MOS transistor 122. The voltage control module 130 includes a first port 131 and a second port 132.

Optionally, the power supply apparatus 100 further includes a combining control module 140.

Optionally, the power supply device 100 further includes a power detection module 150.

Wherein the first circuit module 110 and the second circuit module 120 are connected in parallel.

Specifically, the output end of the first circuit module 110 is connected to a load, and the output end of the second circuit module 120 is connected to the load.

Alternatively, the first power source 111 may be a built-in power source module.

In particular, the first power supply 111 may be a built-in power supply module of the cassette communication device.

Alternatively, the second power source 121 may be an external power adapter, or the second power source 121 may be a UPS battery.

In particular, the second power source 121 may be an external power adapter of the cassette communication device, or the second power source 121 may be an external UPS battery of the cassette communication device.

Specifically, the voltage control module 130 controls the output voltage of the first power source 111 and the output voltage of the second power source 121 through the first port 131 and the second port 132.

Specifically, the voltage control module 130 controls the voltage difference between the output voltage of the first power source 111 and the output voltage of the second power source 121 to be less than or equal to a threshold value.

The threshold value is an empirical value.

In one possible implementation, the voltage control module 130 may include a voltage detection module, a voltage comparison module, and a voltage regulation module.

The voltage detection module is used for detecting the output voltage of the first power supply 111 and the output voltage of the second power supply 121.

The voltage comparison module is configured to compare whether a voltage difference between the output voltage of the first power supply 111 and the output voltage of the second power supply 121 is less than or equal to a threshold value.

The voltage adjustment module is configured to adjust a voltage difference between an output voltage of the first power supply 111 and an output voltage of the second power supply 121 to be less than or equal to a threshold value.

Alternatively, when the voltage difference is greater than the threshold value, the voltage adjustment module adjusts the output voltage of the first power source 111 and the output voltage of the second power source 121 to be less than or equal to the threshold value.

Optionally, the output voltage of the first power source 111 and the output voltage of the second power source 121 regulated by the voltage regulating module can ensure the normal operation of the load.

In one embodiment, the voltage control module 130 may exist independently and be connected to two power sources through a first port 131 and a second port 132, respectively. Optionally, the voltage control module includes the voltage detection module, the voltage comparison module, and the voltage adjustment module.

In another embodiment, the voltage control module 130 may also include two Trim pins and a computer program for implementing the functions of the voltage detection module, the voltage comparison module, and the voltage adjustment module. The two Trim pins may be included in the first power supply 111 and the second power supply 121, respectively, and the computer is connected to the two Trim pins, and controls the output voltage of the first power supply 111 and the output voltage of the second power supply 121 by adjusting the Trim pins through a computer program.

Specifically, the voltage difference of the output voltages of the first power source 111 and the second power source 121 is controlled within a threshold value, that is, the voltage difference is less than or equal to the threshold value.

The voltage control module 130 controls the voltage difference between the output voltage of the first power supply 111 and the output voltage of the second power supply 121 to be smaller than or equal to the threshold value, so that voltage backflow between the first power supply 111 and the second power supply 121 can be avoided, and meanwhile, the first power supply 111 and the second power supply 121 are ensured to supply power to the load 160 at the same time, so that current sharing is realized, and the power supplied by equipment is improved.

Optionally, the power supply device includes a power detection module 150.

In one embodiment, the voltage control module 130 may control the first power source 111 and the second power source 121 to simultaneously supply power to the load 160, so that the first power source 111 and the second power source 121 may be loaded simultaneously, and the power detection module may detect the loading capacity of the first power source 111 and the second power source 121 simultaneously.

When any one of the first power supply 111 and the second power supply 121 has a reduced load capacity, that is, the supply voltage decreases, due to the voltage control module 130, the first power supply 111 and the second power supply 121 can be ensured to supply power to the load at the same time, so as to realize the purpose of on-line detection of the load capacity of the power supply.

For example, when the supply voltage of a certain power supply decreases, the voltage control module 130 may adjust the output voltages of the first power supply 111 and the second power supply 121 to be lower, so that the voltage difference between the output voltages of the first power supply 111 and the second power supply 121 is less than or equal to the threshold value, and it is ensured that the first power supply 111 and the second power supply 121 are loaded simultaneously.

As an example of online detection of the load capacity of the power supply, in this example, it is assumed that the load capacity of the second power supply 121 is reduced. On the premise that the voltage control module 130 ensures that the first power supply 111 and the second power supply 121 supply power to the load simultaneously, the voltage control module 130 finely adjusts the voltage of the second power supply 121, and if the finely adjusted output voltage of the second power supply 121 is increased, the power detection module 150 does not detect the increase of the output current of the second power supply 121, which indicates that the load carrying capacity of the second power supply 121 is reduced.

By setting the voltage control module 130 and the power detection module 150, the on-line detection of the load capacity of the power supply can be realized, and the problem of insufficient power supply capacity of any power supply can be found in time.

Optionally, the first circuit module 110 may further include a first MOS transistor 112, the second circuit module 120 may further include a second MOS transistor 122, and the power supply apparatus may further include a combining control module 140.

In one embodiment, the combination control module 140 is connected to the first MOS transistor 112 and the second MOS transistor 122, and the combination control module 140 is configured to disconnect one of the first MOS transistor or the second MOS transistor when a voltage difference between output voltages of the first power source 111 and the second power source 121 is greater than a threshold value.

Specifically, in one possible implementation, when the voltage difference is greater than the threshold, if the output voltage of the first power supply 111 is greater than the output voltage of the second power supply 121, the combining control module 140 turns off the second MOS transistor 122, and if the output voltage of the second power supply 121 is greater than the output voltage of the first power supply 111, the combining control module 140 turns off the first MOS transistor 111.

Alternatively, the combining control module 140 may be two voltage comparators.

By the combination control module 140, the first MOS transistor 112 and the second MOS transistor 122, a protection circuit can be provided to prevent the reverse current of the power supply voltage when the voltage difference between the output voltages of the first power supply 111 and the second power supply 121 is greater than the threshold value.

It should be noted that, the combination control module 140, the first MOS transistor 112, and the second MOS transistor 122 may be replaced by two diodes as shown in fig. 2, and may also achieve the function of a protection circuit.

The power supply device provided by the embodiment of the application can realize that the built-in power supply module and the external power supply adapter supply power to a load simultaneously, and can realize the on-line detection of the load capacity, namely the power of the external power supply under the condition that the power supply device supplies power to the load.

Fig. 5 is a schematic diagram of a power connector buckle 200 according to an embodiment of the present application.

Alternatively, the design of the power connector clip shown in fig. 5 may be applied to a box-type communication device.

In the buckle 200 shown in fig. 5, the two fixing studs 210, 220 of the buckle have power supply properties, that is, the buckle power connector and the fixing stud are combined into one, wherein the fixing stud 210 is connected to voltage, and the fixing stud 220 is grounded. The fixing clip 200 can be used for the passage of electric current at the same time.

Through the design of the buckle plate 200, the equipment can be free of connectors and cables, the cost of the equipment is reduced, and the installation efficiency and reliability are improved.

It should be noted that, when the pinch plate 200 is applied to a box-type communication device, such as a box-type switch or a box-type router, the problem that the box-type communication device cannot arrange the power adapter terminal on the base plate can be solved, and the problem that the box-type communication device needs to raise the power adapter terminal and arrange the power adapter terminal on the pinch plate in a pinch plate manner can be solved.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A power supply apparatus for supplying power to a load, the power supply apparatus comprising:

the first circuit module comprises a first power supply, and the output end of the first circuit module is connected with the load;

the second circuit module comprises a second power supply, and the output end of the second circuit module is connected with the load;

the voltage control module is used for controlling the voltage difference between the output voltage of the first power supply and the output voltage of the second power supply to be smaller than or equal to a threshold value through the first port and the second port;

wherein the first circuit module is connected in parallel with the second circuit module.

2. The power supply device of claim 1, wherein the voltage control module comprises:

the voltage detection module is used for detecting the output voltage of the first power supply and the output voltage of the second power supply;

a voltage comparison module for comparing whether the voltage difference is less than or equal to the threshold value;

and the voltage regulating module is used for regulating the output voltage of the first power supply and the output voltage of the second power supply when the voltage difference is larger than the threshold value so that the voltage difference is smaller than or equal to the threshold value.

3. The power supply device according to claim 1 or 2, characterized in that,

the first circuit module further includes: the first field effect transistor (MOS) tube is positioned between the first power supply and the load;

the second circuit module further includes: and the second MOS tube is positioned between the second power supply and the load.

4. A power supply device according to claim 3, characterized in that the power supply device further comprises:

the first port of the combining control module is connected with the first MOS tube, the second port of the combining control module is connected with the second MOS tube,

the combining control module is used for disconnecting the first MOS tube or the second MOS tube when the voltage difference is larger than the threshold value.

5. The power supply device according to any one of claims 1 to 4, characterized in that the power supply device further comprises:

and the power detection module is used for detecting the output power of the first power supply and/or the output power of the second power supply when the voltage difference is smaller than or equal to a threshold value.

6. The power supply device according to any one of claims 1 to 5, wherein the power supply device is applied to a cassette apparatus.

7. The power supply apparatus according to claim 6, wherein the first power source is an internal power source of the cassette device, and the second power source is an external power source of the cassette device.

8. A power supply apparatus characterized by comprising the power supply device according to any one of claims 1 to 5.